The Last Monster

Outlast 5 {3}{r}{w}( {3}{r}{w}{t} Put five +1/+1 counters on this creature. Outlast only as a sorcery.)
When The Last Monster dies, you may exile up to three other creatures. Then, you gain life equal to their total power, and The Last Monster deals that much damage to any target.
He's called The Last for a reason. He goes out with a bang, but he always returns.